Jpark..this one is likely better answered by you but someone else might have come across this. On my 09 Tribute and likely on the 09 Escape's, when you use the washers the wipers work no problem and then shut off but after about 3 seconds you get that annoying last wipe which ultamately streaks the window. Not sure if anyone else feels the way I do but it sure would be nice to disable that. I can only presume that its built into the wiper motor circuit board and can not be changed.
Washer wiper swipes usually equal three passes after actuating the washer only function on just about all cars. Try squirting more washer fluid and see if that helps. We have an 08 Tribbie, and it's not a problem for us. :shrug: